Spec Sheet

GENERAL PUMP 1174 Northland Drive • Mendota Heights, MN 55120
Phone: [phone] • Fax: [phone] • e-mail: [e-mail] • www.generalpump.com
Ref 300944 Rev. G
10-19
GENERAL PUMP
A member of the Interpump Group
YG4032S
Straight, Rear Entry Spray Gun
This product is to be used with clean, fresh water. For use involving different or corrosive liquids, contact your GP’s
customer service department. Appropriate filtration should be installed when using unclean liquids. Choose the gun that
most closely matches the rated pressure, max flow and max temperature of the pressure wash system. In any case, the
pressure of the machine should not exceed the permissible pressure rate imprinted on the gun.
INSTALLATION
This gun was designed to operate with hot water (in compliance with the technical specs), making sure not to exceed
the max temperature. Always fit a safety valve to protect the system when the latter is under pressure. Choose a
suitable nozzle and adjust the valve mounted in the front of the gun, thus obtaining a constant supply and avoiding
unwanted pressure spikes. If the nozzle wears out, the pressure falls. When you install a new nozzle, adjust the system
back to the original pressure.
PARTS LIST
No. Part No. Description Qty.
11. Y30068135 Housing 1
12. Y30065251 Coupling, 1/2” NPT-F, SST 1
13. Y30510456 Tube, M18x1.5, SST 1
14. Y30065451 Coupling, 1/2” NPT-F, SST 1
15. Y30251731 Parallel Pin, 5x27.5 mm, Brass 1
16. Y30530384 Trigger, Black 1
17. Y30225551 Stop Pin, 8X7.5, SST 1
18. Y30151084 Safety Latch, Red 1
19. Y30068624 Casing Kit + SS Screws 1
21. Y16307551 Self Tapping Screw, 3.5x18 mm, SST 7
No. Part No. Description Qty.
1. Y30403831 Front Plug, M18x1.5, Brass 1
2.* Y30404524 Piston + Seal Kit 1
4. Y30404151 Parallel SST Pin, 6x25.8 mm 1
5. Y30403731 Spring Holder 1
6. Y30404031 Spacer Ring, 10.1x15.8x3.8 mm, Brass 1
7.* Y30404251 Spring, 2.4x15.3x30 mm, SST 1
8.* Y10202700 Stem Seal, 10x15x2.2 mm, + O-ring 2
9.* Y10306801 O-ring, 1.78x17.7 mm 1
10.* Y10307201 O-ring, 1.78x20.35 1
* Y30404624 Repair Kit, YG4032S
OPERATION
The gun opens and closes a high pressure conduct by means of a piston acting on a seat; the return is controlled by
a spring which releases the trigger. Attention: during pump activation ALWAYS set the gun with its safety latch
connected in order to prevent accidental openings.
INSTRUCTIONS